Road & Track December issue states " The 90-degree V-10 ia a clean-sheet design, engineered specfically for this car (and the forthcoming M6) and not based on any existing BMW powerplant, including the BMW Formula 1 engine."
This thing is a NA V-10, 8200rpm redline, 507hp, 7 speed sequential tranny, 5.0-liter
Engine Pic
Transmission Pic
Steve